Punching-machine



0. V. DUTRO AND A. S. BURROUGHS'.

PUNQHING MACHINE. APPLICATION FILED APR.21, 1919.

1,348,788. P nte Au-g- 3,1920.

0 I b j 54 I If /0 I I I UNI TED STATES PATENT OFFICE.

ORVILLE V. DUTRQ AND ARTHUR S. BURROUGHS, OF SPOKANE, WASHINGTON.

rmvenme-ivmenmn Specification of Letters Patent.

Patented Aug. 3, 1920.

, Application filed April 21, 1919. Serial No. 291,675.

To all/whom it ma'yconcern 1 Be it known that we, OnviLLn V. DUT-RO and.ARTI-IUR S. BUnRoUens, citizens of the United States, residing atSpokane, in the county of Spokane and State of VVashington, haveinvented certain new and useful Improvements in Punching-Machines, ofwhich the following is a specification.

The present invention relates to improvements in punching machines,especially adapted for use in connection with web printing presses, forpuncturing the printed web so that it may subsequently be severed intosheets withthe printed matter thereon. The invention involves anattachment operated from the power applied to the printing press and asa part of the printing ma chine, for accurately and automaticallypuncturing or perforating the web in relation to the printing, and forthis purpose involves a plurality of punches located transversely of themachine, and adjustable both transversely and longitudinally of themachine for adapting the printing press to different lengths of sheetsas required.

Figure 1 is a side elevation of a portion of a web-feed printing press,showing so much thereof as is necessary to illustrate the applicationthereto of the'present invention. V v

Fig. 2 is anenlarged view, partly in sec tion,.sho'wing one end of thecarrier frame and one of the web or paper punches, the otherend of thecarrier frame being substantially similar to that shown herein insection. V

Fig.3 is an enlarged, transverse sectional view of the carrier frameshowing also one of the punches.

Fig. -1- is an enlarged view of one of the dies, broken away, and Fig. 5is a top plan view of the same die.

In actual use, a plurality of the punches, indicated as a whole by theletter P, are used, and .thesepunches are located over the top of theprinting press feeder in the path of travel of the web WV, and supportedfor lateral adjustment on the four frame bars 1, 2, 8, 4:, which in turnare supported, at their ends by housings as H, only one housing beinghere shown, and both housings being longitudinally adjustable of theprinting press frame F upon which they are slidably supported. Thus itwill readily be understood that the punches may be adjusted transverselyof the printing press to puncture'the web at various points across theweb, and the carriage frame including the ears and housings may beadjusted longitudinally of the printed web to puncture or punch the webinto different lengths of sheets as required.

The four supporting or frame bars 1, 2, 3', i are secured as by nuts 5on their threaded ends in the housings, while the bar 4, which is ahollow bar,"has passed therethrough an operating shaft 6, the hollow barbeing secured in the housing at its ends by a nut as 7, and the shaft,which projects at both ends beyond the ends of the hollow bar, having agear of rack wheel 8 fixed near each end,'and at one end is providedwith a handle wheel 9. The gear or rack wheels 8 engage-a fixed rackorrack bar 10,. on a plate 11 at each side of the printing press feeder,and asthe plate is stationary and fixed on the frame F of the appliance,itwill readily be apparent that by turning the hand wheel 9 the carriageframe may be moved longitudinally of the feeder frame, the carriagehousings sliding over the plates 11 and the rack wheels engaging therack bars.

'Each punching-device includes a punch. or plunger 12 and itsdie block13, the former being vertically reci'procable in the bushing 14 whichhas'a knurled head 15 and at its other end' is provided with screwthreads to receive the stationary nut 16. Between the head and the nut21 clampblock 17 is held, the bushing passing through both the block andthe nut, and the block is grooved on its underside as at 18 to engagethe upper surfaces of the two bars 1 and 8, the nut 16 being'fashionedto engage these same bars at their "under sides. In this manner thebushing is rigidly clamped between the two. bars 1 and 3 and functionsas a rigid and efiicient guide for the reciprocable plunger or punch. r

The die block 12 is located directly beneath the punch, and the block isfashioned as the head of a threaded bushing 19, which, at its lower endis equipped with a lock nut 20 that bears against the under side of aclamp block 21 that is perforated at its center to fit over the bushing.This clamp block is also grooved, as at 82, to engage the under sides ofthe two bars 2 and 4, and in Fig. 3 it will be clearly seen that whenthe nut 20 centric bushing, the punch anddie is turned, the die block orhead 12 is brought down into close frictional contact with the upperface of the two bars andthe clamp block iscaused to engage the lowerfaces of these bars, thus rigidly clamping the bushing to the bars,beneath the punch. In the upper end of the die head, an annular recess23 is provided, the recess being arranged eccentrically to the bore ofthe bushing, and within the recess a dieplate 24: is placed to receivethe punch. Thus by turningthis ecplate may be quickly and with facilitybrought into accurate alinement. The web passes between the punch andthe die plate, the former being above the Web and the latter below'theweb and the two members ofthe punching device may be slid along on thesupportingbars 1, 2, 3, 4:, to desired position,

and then madeto coincide by first positioning' the parts,- in order thatthe punch will pass through the die plate, and then the two.

membersof the device may be locked in position, one by turning theknurled head of the punch bushing and the other by turning the nut onthe .die bushing.

r The punch is vertically reciprocated to puncturethe web andpass intothe die ring,

and out again, themotion being imparted thereto from the power appliedto operating the printing press, and the actuating device for the punchincludes a rock shaft 25 eX- tending longitudinally of the printingpress and supported in journal bearings at its outer side, which isoperated or oscillated through the connection 26 from suitablemechanism,'the oscillation of the shaftof' course being at predeterminedintervals.

The actuating shaft is preferably square or rectangular in crosssection, and has thereon the crank arm 27 which may slide on the shaftwhen the carriage frame is to be adjusted longitudinally of the printingpress.

The crank arm has-a vertical pivoted link 28 extending up alongside thehousing and the upper end of this link has pivoted there to a rock arm29 fixed on the transverse,

counter shaft'SO which also is adapted to rock or oscillatesynchronously with the oscillating or actuating shaft 25. This lattershaft'thus reciprocates the punches'through the instrumentality of thecounter-shaft which has a direct connection to each punch through-aforked lever arm 31 that is fixed to the counter-shaft by a set screw 32and'engages a pin 33 that passes transversely through the upperend ofthe punch stem.

A bracket arm 34, rigid with the housing extends downwardly therefrom*into the forked crank arm on the square actuating shaft so that thecrank arm is moved along on its oscillating shaft with the movement ofthe carriage frame, and the carriage frame may belocked in-fixedpos1t1on on the rack plate 11 by means of the lock screw 35 pass-' vvertically through the housing 1n TVhat 'we claim. is

1. The combination in a punching machine with the twov pairsoftransverse bars forminga carriage frame, of a punching device supportedon the carriage frame and comprising a die member anda punch member inreciprocal relation thereto, means for reciprocating thepunchmember, oneof said barslbeing tubular, and actuating means including a cooperatingmember in the tubular bar for moving the carriage frame;

2. Theco'mbinationwith alongitudinally adjustable carriage frameincluding the four transverse barsone of which is hollow, of thepunching devicesadjustably held on said bars, a supporting frame and arack bar thereon, a rack shaft passed through saidv hollow bar and arack wheel on said shaft engaging the rack bar, form'oving the carriageframe.

3. The combination with the carriage frame including the transversesupporting bars arranged in horizontal pairs, of a punch memberand-meansfor clamping it onthe upper pair of bars, a die member and means forclamping it on the lower pair'of bars in operative. relation to thepunch member, and

ORVILLE V. DUTRO. ARTHUR Si BURROUGHS.

